- Narrow/Wide 110pcd 4 Arm 1x by 10/11/12x chainring The X110 chainrings are compatible with the Shimano Dura Ace 9000/R9100, Ultegra 6800/8000 and 105 5800/R7000 chainsets. Please note: these chainrings are designed to be compatible with the modern chainsets that have a cutout on one arm, they are also backwards compatible with the earlier chainsets that do not have the cutout. Features and Information * Material: 7075 T6 Aluminium * Unique PCD: 110mm 4 arm * Size: 38, 40, 42, 44 teeth * Colour : Black
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